Here's a quick one. What do you use to secure the wire of HF inductors, whether wound on cylindrical formers or on iron powder toroids. I have googled the topic and read lots of the hits. Polystyrene dissolved in acetone, toluene or xylene seems to be popular.
In the past I have used tarzans grip, nail varnish, genuine shellac made of flakes in methylated spirit, model aircraft styrene cement and PCB conformal coating from s spraycan. The PCB coating was neat and easy to apply but I wonder about its dialectric properties at radio frequencies. I'd think it would be fine but I've thought wrong before. Americans favour Duco cement but that brand-name of solvent based nitrocellulose glue seems not to exist in Oz. I have just tried dissolving foam cups in acetone but only produced a white mass that was not very adhesive. Maybe my cups aren't really polystyrene.
So what's a good coil dope, preferably available off the shelf in Australia? PH